A 6.4 second occultation was recorded by Chris Chad, using Video OSD technique.

Three clearly observed misses were recorded for this event.

View the TT14 prediction.

Observers:
  1    C Chad,Coonabarabran, NSW,AU
  2(M) J Broughton,Reedy Creek, QLD, AU
  3(M) D Gault,Hawkesbury Heights,NSW,AU
  4(M) W Hanna,Alice Springs, Australia
  5(P) Prediction, TT14   24 Aug

        

Discussion:

The circle above is plotted at the expected 169 km diameter of Hypatia. With only one chord it is not possible to determine whether Chris was north or south of the central line of the event.

The figure below shows the Tangra light curve of the occultation.

Observational Data:

Observation details for MP ( 238 ) Hypatia
By Star              UCAC2 28395709
On 2012-09-12  at 11:18:46.0

_______________________________

Observer   Chris Chad, Owen Chad
Location   Coonabarabran, NSW
Longitude  +149:16
Latitude   -31:16
Altitude   528 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear
Camera Type  Other integrating            NTSC/EIA
Camera Delay 0.216666666666667
Timing     GPS - time inserted Video with frame analysis
Disappearance  11:18:50.29
Reappearance   11:18:56.73
Comments: Samsung SCB-2000 (modded).  1 frame delay applied.
Clear event from Mum & Dad's driveway.

_______________________________

Observer   John Broughton
Location   Reedy Creek, QLD, AU
Longitude  +153:23
Latitude   -28:06
Altitude   66 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Steady Clear
Camera Type  WAT120N        PAL/CCIR
Camera Delay 0.33
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: The star faded as it passed behind a dense tree
and disappeared around 11:19:15.

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights,NSW,AU
Longitude  +150:38
Latitude   -33:39
Altitude   286 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Strong flickering Clear
Camera Type  WAT120N        NTSC/EIA
Camera Delay 0.275
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:

_______________________________

Observer   William Hanna
Location   Alice Springs, Australia
Longitude  +133:53
Latitude   -23:42
Altitude   581 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   36 cm
Seeing     Slight flickering Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay 0.67
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Assistance with setting up the 14" was provided by
Richard Williamson and Paul Nitschke.